This smart casual combo of a navy blazer and light blue jeans is extremely easy to pull together in seconds time, helping you look awesome and ready for anything without spending a ton of time digging through your closet. Inject a more casual touch into your ensemble by sporting white canvas low top sneakers. As you can see here, this combo is a really smart idea, especially for transeasonal weather, when the temperatures are dropping. Wondering how to perfect semi-casual dressing as you progress through your 20s? This pairing is the perfect answer.